I ws able to talk to nick * on the phone and we hammered out where it was.
Your the bomb.

Randman1 - the chilton manual does not give the any information on which colored vacuum line from the programer to the doors are, do you happen to know which line controls the dash vents?

OK here are the test results...

Tank held at 12 no problem
The line coming out f the fire wall held pressure no problem.
My source had great pressure. Somewhere around 15 to 20
The line from the Y to the tank held pressure no problem.

That check valve is some kind of a one way valve I believe, because I checked that as a seperate part all by its self and it held pressure on one end and the other way it passed.
Recap
Checked this side A ---------)------ B and this side
Checked the Fire wall took it off the Y and tested the line going int the fire wall. It
Held pressure.
Checked the line to the tank while on the tank and it held.
Checked the tank by its self it held.

All connections looked good except the top black hose that went from the ) check valve to the source. That one held pressure but could be replaced.

Now Im not sure how to check under the dash what would be next.

Whew :?

Pondering going North. Like Alaska. No need for A/C.

James, that is the reason why I asked randman1 the question I did about which color is the line to the door, you may need to check that line next.....

Nick
Are you able to just pull those lines and check them or should I wait and make sure I know what I'm doing first. Seems like I might have to wait Id hate to screw something up.

Your testing shows that you have no vacuum leaks under the hood. I do have one question though cause I'm not too familiar with the vacuum gauge you're using. Once you disconnect one of the lines at the Y connector, you will lose vacuum pressure in the whole system. Does your gauge have an input and output so you can start the vehicle and "recharge" the system? Did you also check the gauge while adjusting the Mode button to select different airflow?

Hmm.
The gauge does have a vacuum and a pressure nozzle. I can blow air in or I can suck it out.
Start the vehicle and recharge the system. Hmm don't know anyhting about that.

I did check the vaccum on the line coing from the engine with motor on. But know where else, did'nt really know how to or where to do that.

Any suggestions.

That was my next step in the process on mine if it didn't start working when it did. It would be nice to see that when the line is purged by hand to also activate the electronics to see if the doors actually operate when the mode is changed.

No I couldn't pull mine apart, that is why I asked randman1 if he knew which color line it was, I would cut it to see if there was vacuum and to purge the line to the door to see if it would open or close.